Add eager loading

Author: u2

CHANGELOG.md

@@ -3,6 +3,7 @@
 
 #### Features
 
+* [#980](https://github.com/intridea/grape/issues/980): Grape is now eager-loaded - [@u2](https://github.com/u2).
 * [#956](https://github.com/intridea/grape/issues/956): Support `present` with `Grape::Presenters::Presenter`  - [@u2](https://github.com/u2).
 
 #### Fixes

lib/grape.rb

@@ -20,6 +20,7 @@
 require 'active_support/core_ext/object/conversions'
 require 'active_support/core_ext/array/extract_options'
 require 'active_support/core_ext/hash/deep_merge'
+require 'active_support/dependencies/autoload'
 require 'grape/util/content_types'
 require 'multi_json'
 require 'multi_xml'
@@ -30,110 +31,130 @@
 I18n.load_path << File.expand_path('../grape/locale/en.yml', __FILE__)
 
 module Grape
-  autoload :API,                 'grape/api'
-  autoload :Endpoint,            'grape/endpoint'
+  extend ActiveSupport::Autoload
 
-  autoload :Route,               'grape/route'
-  autoload :Namespace,           'grape/namespace'
+  eager_autoload do
+    autoload :API
+    autoload :Endpoint
 
-  autoload :Path,                'grape/path'
+    autoload :Route
+    autoload :Namespace
 
-  autoload :Cookies,             'grape/cookies'
-  autoload :Validations,         'grape/validations'
-  autoload :Request,             'grape/http/request'
+    autoload :Path
+
+    autoload :Cookies
+    autoload :Validations
+    autoload :Request, 'grape/http/request'
+  end
 
   module Http
-    autoload :Headers,           'grape/http/headers'
+    extend ActiveSupport::Autoload
+    eager_autoload do
+      autoload :Headers
+    end
   end
 
   module Exceptions
-    autoload :Base,                           'grape/exceptions/base'
-    autoload :Validation,                     'grape/exceptions/validation'
-    autoload :ValidationErrors,               'grape/exceptions/validation_errors'
-    autoload :MissingVendorOption,            'grape/exceptions/missing_vendor_option'
-    autoload :MissingMimeType,                'grape/exceptions/missing_mime_type'
-    autoload :MissingOption,                  'grape/exceptions/missing_option'
-    autoload :InvalidFormatter,               'grape/exceptions/invalid_formatter'
-    autoload :InvalidVersionerOption,         'grape/exceptions/invalid_versioner_option'
-    autoload :UnknownValidator,               'grape/exceptions/unknown_validator'
-    autoload :UnknownOptions,                 'grape/exceptions/unknown_options'
-    autoload :InvalidWithOptionForRepresent,  'grape/exceptions/invalid_with_option_for_represent'
-    autoload :IncompatibleOptionValues,       'grape/exceptions/incompatible_option_values'
+    extend ActiveSupport::Autoload
+    autoload :Base
+    autoload :Validation
+    autoload :ValidationErrors
+    autoload :MissingVendorOption
+    autoload :MissingMimeType
+    autoload :MissingOption
+    autoload :InvalidFormatter
+    autoload :InvalidVersionerOption
+    autoload :UnknownValidator
+    autoload :UnknownOptions
+    autoload :InvalidWithOptionForRepresent
+    autoload :IncompatibleOptionValues
     autoload :MissingGroupTypeError,          'grape/exceptions/missing_group_type'
     autoload :UnsupportedGroupTypeError,      'grape/exceptions/unsupported_group_type'
-    autoload :InvalidMessageBody,             'grape/exceptions/invalid_message_body'
-    autoload :InvalidAcceptHeader,            'grape/exceptions/invalid_accept_header'
+    autoload :InvalidMessageBody
+    autoload :InvalidAcceptHeader
   end
 
   module ErrorFormatter
-    autoload :Base,              'grape/error_formatter/base'
-    autoload :Json,              'grape/error_formatter/json'
-    autoload :Txt,               'grape/error_formatter/txt'
-    autoload :Xml,               'grape/error_formatter/xml'
+    extend ActiveSupport::Autoload
+    autoload :Base
+    autoload :Json
+    autoload :Txt
+    autoload :Xml
   end
 
   module Formatter
-    autoload :Base,              'grape/formatter/base'
-    autoload :Json,              'grape/formatter/json'
-    autoload :SerializableHash,  'grape/formatter/serializable_hash'
-    autoload :Txt,               'grape/formatter/txt'
-    autoload :Xml,               'grape/formatter/xml'
+    extend ActiveSupport::Autoload
+    autoload :Base
+    autoload :Json
+    autoload :SerializableHash
+    autoload :Txt
+    autoload :Xml
   end
 
   module Parser
-    autoload :Base,              'grape/parser/base'
-    autoload :Json,              'grape/parser/json'
-    autoload :Xml,               'grape/parser/xml'
+    extend ActiveSupport::Autoload
+    autoload :Base
+    autoload :Json
+    autoload :Xml
   end
 
   module Middleware
-    autoload :Base,              'grape/middleware/base'
-    autoload :Versioner,         'grape/middleware/versioner'
-    autoload :Formatter,         'grape/middleware/formatter'
-    autoload :Error,             'grape/middleware/error'
+    extend ActiveSupport::Autoload
+    autoload :Base
+    autoload :Versioner
+    autoload :Formatter
+    autoload :Error
 
     module Auth
-      autoload :Base,            'grape/middleware/auth/base'
-      autoload :DSL,             'grape/middleware/auth/dsl'
-      autoload :StrategyInfo,    'grape/middleware/auth/strategy_info'
-      autoload :Strategies,      'grape/middleware/auth/strategies'
+      extend ActiveSupport::Autoload
+      autoload :Base
+      autoload :DSL
+      autoload :StrategyInfo
+      autoload :Strategies
     end
 
     module Versioner
-      autoload :Path,                 'grape/middleware/versioner/path'
-      autoload :Header,               'grape/middleware/versioner/header'
-      autoload :Param,                'grape/middleware/versioner/param'
-      autoload :AcceptVersionHeader,  'grape/middleware/versioner/accept_version_header'
+      extend ActiveSupport::Autoload
+      autoload :Path
+      autoload :Header
+      autoload :Param
+      autoload :AcceptVersionHeader
     end
   end
 
   module Util
-    autoload :InheritableValues, 'grape/util/inheritable_values'
-    autoload :StackableValues,   'grape/util/stackable_values'
-    autoload :InheritableSetting, 'grape/util/inheritable_setting'
-    autoload :StrictHashConfiguration, 'grape/util/strict_hash_configuration'
+    extend ActiveSupport::Autoload
+    autoload :InheritableValues
+    autoload :StackableValues
+    autoload :InheritableSetting
+    autoload :StrictHashConfiguration
   end
 
   module DSL
-    autoload :API,               'grape/dsl/api'
-    autoload :Callbacks,         'grape/dsl/callbacks'
-    autoload :Settings,          'grape/dsl/settings'
-    autoload :Configuration,     'grape/dsl/configuration'
-    autoload :InsideRoute,       'grape/dsl/inside_route'
-    autoload :Helpers,           'grape/dsl/helpers'
-    autoload :Middleware,        'grape/dsl/middleware'
-    autoload :Parameters,        'grape/dsl/parameters'
-    autoload :RequestResponse,   'grape/dsl/request_response'
-    autoload :Routing,           'grape/dsl/routing'
-    autoload :Validations,       'grape/dsl/validations'
+    extend ActiveSupport::Autoload
+    eager_autoload do
+      autoload :API
+      autoload :Callbacks
+      autoload :Settings
+      autoload :Configuration
+      autoload :InsideRoute
+      autoload :Helpers
+      autoload :Middleware
+      autoload :Parameters
+      autoload :RequestResponse
+      autoload :Routing
+      autoload :Validations
+    end
   end
 
   class API
-    autoload :Helpers,           'grape/api/helpers'
+    extend ActiveSupport::Autoload
+    autoload :Helpers
   end
 
   module Presenters
-    autoload :Presenter,         'grape/presenters/presenter'
+    extend ActiveSupport::Autoload
+    autoload :Presenter
   end
 end